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WO2005060710A2 - Unite d'etiquette d'affichage sans fil - Google Patents

Unite d'etiquette d'affichage sans fil Download PDF

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Publication number
WO2005060710A2
WO2005060710A2 PCT/US2004/043173 US2004043173W WO2005060710A2 WO 2005060710 A2 WO2005060710 A2 WO 2005060710A2 US 2004043173 W US2004043173 W US 2004043173W WO 2005060710 A2 WO2005060710 A2 WO 2005060710A2
Authority
WO
WIPO (PCT)
Prior art keywords
display
wdt
tag
integrated circuit
inventory
Prior art date
Application number
PCT/US2004/043173
Other languages
English (en)
Other versions
WO2005060710A3 (fr
Inventor
Anurag Goel
Sunit Saxena
Mark Douglas Mcdonald
Leonard Mark Dorfman
Original Assignee
Altierre Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Altierre Corporation filed Critical Altierre Corporation
Publication of WO2005060710A2 publication Critical patent/WO2005060710A2/fr
Publication of WO2005060710A3 publication Critical patent/WO2005060710A3/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0707—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0712—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of triggering distinct operating modes or functions dependent on the strength of an energy or interrogation field in the proximity of the record carrier
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07701—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction
    • G06K19/07703—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction the interface being visual
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/04—Electronic labels

Definitions

  • the present invention relates to electronic inventory systems. Further, the present invention relates to electronic shelf labels and electronic inventory tags. More specifically, the present invention relates to electronic shelf labels and tags adapted to communicate wirelessly.
  • FIG. 1 shows an example of a typical printed shelf label. Shelf labels are fitted into C-shaped channels at the edge of product display shelves. Typically, an in-store computer-based printing system downloads "Price Files" from a central location, such as a Retail Chain Headquarters. The information in Price Files is printed on shelf labels and these new shelf labels are manually inserted into the shelf C-channels, usually on a weekly basis. A typical large retail store must update thousands of shelf labels each week.
  • ESL Electronic Shelf Labels
  • ESLs 10 display basic price information on a segmented liquid crystal display (LCD).
  • ESLs 10 may receive display information by infrared (IR) or radio frequency (RF) communication 12.
  • IR infrared
  • RF radio frequency
  • Current ESLs 10 often use unidirectional communications techniques to transmit data from the in-store computer-based pricing system to the deployed ESLs 10.
  • Some ESLs 10 are capable of bidirectional communication, allowing the deployed ESLs 10 to send information or requests to the in-store computer system 14. Communication between an in-store computer system 14 and the deployed ESLs 10 is facilitated by one or more access points 16. Access points 16 are often located in the ceilings of the store.
  • access points 16 are often located in the ceilings of the store.
  • ESLs 10 have a large, high-profile form- factor because they incorporate some combination of batteries, electronic devices, large sheet metal RF antennae and bulky mounting attachments. As a result, ESLs 10 extend beyond the confines of the shelf C-channel 18 and hence prone to damage resulting from incidental contact or collision with shoppers, staff, shopping carts, etc. [0006] Referring now to Figure 4 and Figure 5, the content and format of displayable information is limited in current ESLs 10. Because current ESLs 10 use segmented LCDs to display price and other information 102, display formats are rigidly constrained to alphanumeric, non-graphical data.
  • Segmented LCDs 102 also restrict the placement of displayable characters to predetermined positions on the display surface. These constraints and restrictions result in poor display readability and limited versatility of information displayed. Also, the limitations of LCD content, format and placement necessitate the use of printed labels 104 to augment the ESL 10, as shown in Figure 4. The printed labels 104 carry store operations information, including stocking numbers, barcodes, and other static information. [0007] Finally, current ESLs have limited functionality, and are generally capable of performing only basic functions, hi-store computer systems control all device functionality. For example, devices must be commanded to disable or resume display operations or to otherwise reduce power consumption to conserve battery life.
  • the present invention addresses various issues associated with prior art ESLs and enables the production of a low-profile Wireless Display Tag (WDT) that fits within the confines of shelf-edge C-channel on a retail store display shelf. WDTs may also be used to tag high- value retail item units where it can simultaneously function as a price tag, an inventory locating device and an anti-theft device.
  • WDT Wireless Display Tag
  • the invention provides for bidirectional communication between the WDT and a central database using an RF integrated Circuit (RFIC) that combines the backscatter RF communications method, amplified backscatter RF communications method and the active RF communications method.
  • RFIC RF integrated Circuit
  • the invention also provides for wired serial communication between the WDT and any of a number of devices including, but not limited to, a handheld controller and an external visual display system.
  • the invention may use a low profile antenna, hi some embodiments, the antemia is painted onto a surface within the WDT.
  • the invention may use both flexible and rigid paper-thin display elements to facilitate production of rigid and flexible WDTs.
  • the display element is a dot-matrix display providing high-resolution programmable display formats.
  • the WDT is capable of displaying graphics or variable format alphanumeric characters and the placement of display items is user programmable.
  • machine-readable barcodes may be displayed by virtue of the use of the dot matrix display in a user programmable fashion.
  • Certain embodiments use active-matrix LCD, passive-matrix LCD and other display technologies.
  • the invention may derive power from a combination of battery and solar cell sources.
  • the battery may supply power for a portion of the RFIC.
  • the RFIC includes digital logic, volatile and non-volatile memory, display driver and analog RF circuitry.
  • the battery supplies power for the RF analog circuitry, digital logic and volatile memory within the RFIC.
  • the solar cell may provide sufficient power to operate the display and parts of the RFIC, including the digital logic, volatile memory and display driver portions.
  • the WDT may conserve battery power by reducing functionality and disabling the display. In such low-light conditions, the battery supplies sufficient power to maintain data stored in the volatile memory.
  • the WDT may resume normal display operation.
  • low light conditions may be determined based on the minimum light required to operate a retail store, as when overhead lights are extinguished. When lighting is restored, the WDT may detect the increased solar cell power generation and enables the display element.
  • the solar cell element may form the back plane of the display element - thus presenting maximum surface area for the most-efficient photon collection, as well as maximizing the WDT facing for display purposes (Figure 11).
  • Embodiments of the WDT have a low profile and a compact surface area, suitable for mounting on C-channels of a retail store display shelf.
  • a low-profile form-factor of the WDT is possible, in part, because the WDT may use a single component containing the RF circuitry and a low profile RF antenna that, in some embodiments, is created by painting a pattern on a suitable WDT surface.
  • certain embodiments may use flexible display elements to enable flexible WDTs to be produced.
  • the WDT may be initialized through communication with in-store computer systems using an error-free process for initialization of the WDT as disclosed in the concurrently filed U.S. Provisional Patent Application titled "An Error Free Method for Wireless Display Tag Initialization," incorporated herein by reference.
  • the WDT may maintain a unique identifier (ID) that is stored in volatile or non-volatile memory.
  • the volatile memory may be continuously supplied with power and refreshed to maintain the integrity of the WDT's ID.
  • An in-store central application server or controller may maintain a database linking the WDT IDs to a retail item's UPC number.
  • Environmental sensors can be built into WDTs to monitor temperature, humidity, etc.
  • the WDT can transmit via RF that alarm condition to a central computer.
  • a sample circuit for detecting temperature is shown in Figure 14.
  • the invention has various advantages: [0020] First, a variety of store operations information may be maintained by the WDT and displayed upon request by store staff. While the pricing screens are always visible by default, staff may temporarily change the display to store operations information screens using a hand-held terminal. [0021] Second, graphical information, including barcodes may be displayed as part of store operations screens. [0022] Third, the invention may serve as an anti-theft device. Because the WDT communicates with a central controller, its location can be determined by the communication network.
  • the displayable area may extend to the edges of the WDT, allowing multiple contiguously positioned WDTs to function as a single, large display.
  • embodiments of the WDT may assist store management and staff by providing store operational data on demand. Information concerning physical location of products, inventory levels, stocking numbers may be stored in the WDT. The WDTs may display information regarding store operation and control on demand. Access to the information can be provided on command from the central controller or on command from authorized handheld wireless terminals.
  • Store communications can be improved because the central control system can command WDTs to display a range of symbols for the attention of staff or management to facilitate their implementation of certain store operation functions such as stocking and inventory management.
  • the invention can monitor the environment, such as temperature, humidity. If the parameters exceed the allowed bounds, then the store can be alerted to correct a potential issue before it becomes a problem.
  • Figure 1 shows a prior art example shelf label printed on paper; [0027] Figure 2 shows how price information may be transferred from central computers to ESLs by RF or IR transmission; [0028] Figure 3 shows a prior art ESL protruding from the C-channel mounting on a display shelf; [0029] Figure 4 shows a prior art ESL with a paper label attached for barcode and store operations information; [0030] Figure 5 shows the rigid display format of a prior art ESL; [0031] Figure 6 shows the disclosed WDT fitted within the confines of a shelf C- channel; [0032] Figure 7 shows the display surface of the disclosed WDT; [0033] Figure 8 shows the display area and profile of the disclosed WDT of Figure 6; [0034] Figure 9 shows the interior of the WDT of Figure 6, behind the display area, showing the placement of various elements of the WDT; [0035] Figure 10 is an exploded perspective view of the disclosed WDT components showing the relative positions of the various elements of
  • a wireless electronic labeling device 20 may display text and graphics in a form factor capable of unobtrusively replacing printed shelf-edge paper labels and sales or inventory tags that are attached to movable items within a controlled area.
  • the wireless electronic labeling device or "Wireless Display Tag” (WDT) 20 may be located in the shelf-edge C-channel 22 of a display shelf 24 located within a retail store.
  • the WDT 20 may include a combined active transceiver and backscatter communications system as disclosed in the concurrently filed U.S. Provisional Patent Application titled "Wireless Display Tag (WDT) Using Active and Backscatter Transceivers," incorporated herein by reference.
  • the WDT 20 may be initialized using a system and method for matching the ID of the WDT 20 to the proper product located on a specific shelf space using an error-free process as disclosed in the concurrently filed U.S. Provisional Patent Application titled "An Error Free Method for Wireless Display Tag Initialization.”
  • the WDT 20 may include a solar cell 26 and a dot-matrix display 28 capable of displaying various graphical representations, including alphanumeric data 30 and barcodes 32.
  • the dot-matrix display 28 and the solar cell 26 may be located on the front-facing surface 34 of the WDT 20.
  • the solar cell 26 may be the primary power source supplying the dot-matrix display panel.
  • the WDT 20 may also include a radio frequency (RF) integrated circuit (RFIC) 36 that enables the WDT to communicate wirelessly in a bidirectional manner with an in-store computer system.
  • the WDT 20 may include a zero direct current power RF backscatter transceiver as disclosed in the concurrently filed U.S. Provisional Patent Application titled "RF Backscatter Transmission with Zero DC Power Consumption," incorporated herein by reference.
  • the RFIC 36 may combine active transceiver and backscatter communications as disclosed in the concurrently filed U.S.
  • the RFIC 36 may be mechanically and electrically coupled to the back of the dot-matrix display 28 and powered by a battery 38.
  • the RFIC 36 may transmit and receives electromagnetic signals using an RF antenna 40.
  • the RF antenna 40 may be a low- profile antenna enclosed within the WDT 20.
  • Various embodiments utilize an RF antenna created by etching a metallic surface or by "painting" the antenna onto an available surface.
  • Figure 10 shows the relative position of components within an embodiment of the invention.
  • An enclosure may be formed by matingly joining a rear housing 42 and a front housing 44.
  • a thin-form battery 46, RF antenna 40, RFIC 36, a front- mounted solar cell 26 and a dot-matrix display panel 28 may be mechanically and electrically coupled.
  • Alternative embodiments may utilize an RF antenna that is painted or etched onto the face of the front or rear housing 42.
  • another embodiment of the invention may extend the dot-matrix display 50 to the edges of the WDT front housing 44.
  • An enclosure may be formed by matingly joining a rear housing 42 and a front housing 44.
  • a thin-form battery 46, an internally mounted solar cell 48, an RF antenna 40, an RFIC 36 and an LCD dot- matrix display panel 50 may be mechanically and electrically coupled.
  • the internally mounted solar cell 48 may generate power by absorbing light passing through the LCD dot-matrix display panel 50.
  • one skilled in the art would be able to construct a matrix of WDTs to form a compound display as needed or required by shelf format and content.
  • both the dot- matrix display 28, and 50 are capable of displaying alphanumeric characters 30 and graphics data. Character font size and shapes are programmable within the WDT. A wide variety of graphical forms may be displayed, including barcodes 32 and special symbols.
  • FIG. 12 shows the information that may be displayed on a WDT, including a mix of upper and lower case characters 52, barcode data 32, enlarged font size 54, and enlarged, bold font types 56. Barcodes may be read by commercial barcode reading systems. Alternative embodiments of the invention include color dot-matrix displays.
  • the solar cell 26, and 48 facilitates power management by permitting the WDT to reduce power consumption independent of the in- store central controller. Because the solar cell 26, and 48 may produce power in proportion to the intensity of light falling upon its photoactive surface, low light conditions may be detected by the WDT and the device may disable the display. The solar cell 26, and 48 may provide power for the display panel 28, 50 and parts of the RFIC 36.
  • the RFIC 36 contains digital logic, volatile memory, display driver circuitry and analog RF circuitry.
  • the solar cell may supply power to the digital logic, the volatile memory and the display driver circuitry in the RFIC 36.
  • the battery 46 may supply power to the digital logic and volatile memory in the RFIC 36.
  • the battery may also supply power to the analog RF circuitry in the RFIC 36.
  • the RFIC 36 may be recognized by in-store control and pricing systems using an identification code (ID) that is stored in the volatile memory of the RFIC 36. hi some embodiments, the battery 46 ensures that the RFIC 36 and its internal memory are powered continuously regardless of light conditions.
  • ID identification code
  • the in-store control and pricing systems may correlate and update the WDT using a system and method for matching numerous electronic displays to the proper product located on a specific shelf space using an error-free process for initialization of the WDT as disclosed in the concurrently filed U.S. Provisional Patent Application "An Error Free Method for Wireless Display Tag Initialization.”
  • WDTs may be used as anti- theft devices because they contain an RFIC that can be readily identified and located in the store.
  • the WDT may be attached to an item to be used as a price or inventory tag and may display a variety of information, including price, stock or inventory numbers and barcodes.
  • the passive backscatter capability of the WDT permits its use as a transponder that responds on demand to a poll by a near-field RF transmitter/receiver 58.
  • the transmitter/receiver 58 may report the presence of the WDT RFIC to a central applications server 60 that tracks the presence or absence of monitored WDT RFIC 36, thereby enabling theft detection and activation of anti-theft measures such as an alarm 62.
  • the WDT can also include environmental sensors that monitor temperature, humidity and other environmental factors.
  • Figure 14 shows an implementation of a temperature sensor in a WDT.
  • the PTAT reference 1400 is compared to a band-gap reference 1405 by a thresholding amplifier 1410, which provides an input to digital control logic 1415.
  • the output of the logic provides the input to a power amplifier 1420, from which a signal is sent to the antenna 1425.
  • the WDT can transmit via RF that alarm condition to a central computer.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transceivers (AREA)
  • Near-Field Transmission Systems (AREA)
  • Display Racks (AREA)
  • Cash Registers Or Receiving Machines (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Transmitters (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

La présente invention concerne une étiquette d'affichage sans fil (WDT) peu encombrante insérée dans les limites d'un profilé en C d'un bord d'étagère de présentation d'un magasin de vente au détail. L'étiquette d'affichage sans fil peut également être utilisée pour marquer des objets de vente au détail de grande valeur ; dans ce cas, elle sert, simultanément, d'indicateur de prix et de dispositif antivol. Le mode de réalisation décrit dans cette invention permet une communication bidirectionnelle entre l'étiquette d'affichage sans fil et la base de données centrale. Le procédé susmentionné consiste à utiliser une antenne discrète qui peut être peinte sur une surface à l'intérieur de l'étiquette d'affichage sans fil. Cette étiquette peut permettre l'affichage de graphiques et de caractères alphanumériques à format variable ; le placement des articles d'étalage peut être programmé par l'utilisateur. L'étiquette utilise un circuit intégré RF (RFIC) qui combine un procédé de communication RF par rétrodiffusion, un procédé de communication RF par rétrodiffusion amplifiée et le procédé de communication RF actif.
PCT/US2004/043173 2003-12-18 2004-12-20 Unite d'etiquette d'affichage sans fil WO2005060710A2 (fr)

Applications Claiming Priority (20)

Application Number Priority Date Filing Date Title
US53079003P 2003-12-18 2003-12-18
US53078303P 2003-12-18 2003-12-18
US53081603P 2003-12-18 2003-12-18
US53081703P 2003-12-18 2003-12-18
US53078203P 2003-12-18 2003-12-18
US53079503P 2003-12-18 2003-12-18
US53082303P 2003-12-18 2003-12-18
US53078403P 2003-12-18 2003-12-18
US53081803P 2003-12-18 2003-12-18
US53081903P 2003-12-18 2003-12-18
US60/530,823 2003-12-18
US60/530,819 2003-12-18
US60/530,817 2003-12-18
US60/530,784 2003-12-18
US60/530,782 2003-12-18
US60/530,816 2003-12-18
US60/530,795 2003-12-18
US60/530,790 2003-12-18
US60/530,783 2003-12-18
US60/530,818 2003-12-18

Publications (2)

Publication Number Publication Date
WO2005060710A2 true WO2005060710A2 (fr) 2005-07-07
WO2005060710A3 WO2005060710A3 (fr) 2005-10-06

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Family Applications (4)

Application Number Title Priority Date Filing Date
PCT/US2004/043014 WO2005060702A2 (fr) 2003-12-18 2004-12-20 Transmission en radiodiffusion r.f. a consommation de courant cc nulle
PCT/US2004/043173 WO2005060710A2 (fr) 2003-12-18 2004-12-20 Unite d'etiquette d'affichage sans fil
PCT/US2004/042957 WO2005060699A2 (fr) 2003-12-18 2004-12-20 Procede sans erreur d'initialisation d'etiquette d'affichage sans fil (wdt)
PCT/US2004/043010 WO2005060701A2 (fr) 2003-12-18 2004-12-20 Etiquette d'affichage sans fil (wdt) utilisant des emetteurs-recepteurs actifs et a retrodiffusion

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2004/043014 WO2005060702A2 (fr) 2003-12-18 2004-12-20 Transmission en radiodiffusion r.f. a consommation de courant cc nulle

Family Applications After (2)

Application Number Title Priority Date Filing Date
PCT/US2004/042957 WO2005060699A2 (fr) 2003-12-18 2004-12-20 Procede sans erreur d'initialisation d'etiquette d'affichage sans fil (wdt)
PCT/US2004/043010 WO2005060701A2 (fr) 2003-12-18 2004-12-20 Etiquette d'affichage sans fil (wdt) utilisant des emetteurs-recepteurs actifs et a retrodiffusion

Country Status (4)

Country Link
US (4) US8517265B2 (fr)
EP (2) EP1698093A4 (fr)
JP (2) JP5259958B2 (fr)
WO (4) WO2005060702A2 (fr)

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US7604167B2 (en) 2009-10-20
WO2005060699A3 (fr) 2006-03-23
US20050152292A1 (en) 2005-07-14
US20080266022A1 (en) 2008-10-30
US7369019B2 (en) 2008-05-06
US8517265B2 (en) 2013-08-27
JP2007515898A (ja) 2007-06-14
JP5259958B2 (ja) 2013-08-07
EP1702201A2 (fr) 2006-09-20
JP4809241B2 (ja) 2011-11-09
WO2005060701A2 (fr) 2005-07-07
EP1702201B1 (fr) 2015-04-08
JP2007519990A (ja) 2007-07-19
WO2005060702A3 (fr) 2006-03-23
WO2005060699A2 (fr) 2005-07-07
EP1698093A4 (fr) 2009-09-02
WO2005060702A2 (fr) 2005-07-07
WO2005060710A3 (fr) 2005-10-06
EP1698093A2 (fr) 2006-09-06
US20050162255A1 (en) 2005-07-28
WO2005060701A3 (fr) 2006-10-05
EP1702201A4 (fr) 2009-09-02

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